Just wanted to thank u for ur videos; setting out, two peg test, height of collimation and the others, they were crucial in my Cert IV. Most appreciated.
Thanks man. I'm actually a computer nerd not a surveyor, I'm just trying to educate myself but if you know how many survey points you're taking you can program Excell to do all the math for you. You seem to be familiar with spreadsheet programs but there is so much more you can do with it... even incorporate your data into a 3d graph. I hope this was as helpful as your video. Thanks again. Very helpful.
Hi Gary, yeah I am a bit of a computer nerd as well and I have done all of these spreadsheets with all of the formulas and graphs however that doesn't help my students learn how to do it in the first place.
Hello Buildsum, Gr8 video! One query though.. When you are observing the levels two points from the same reference point and one gives you a lower value, doesnt it indicate a fall? as in the vid above, first two points : 2.050 and 1.970.. observed from the same datum. 1.970 must be lower than 2.050. But How come 1.970's RL is greater than that of 2.050? Isnt the first set of difference values coming under fall and second set under rise?
Monis Raza Hi Monis I'm glad you like the videos as for your question as the ground rises the reading on the staff will get less therefore a reading of 1.000 would be higher on the ground than a reading of 1.200. Therefore the lower the reading the higher the ground Hope this helps Buildsum
Thanks bssk1337, There should be no error between the 3 checks if there are then you have done something wrong with your calculations. An error of up to 5 mm would generally be acceptable for the reading however this depends on the number of readings that you take, distance and change in height over the survey run. Hope this helps
Hi Mate, they only equal each other when you have a closed survey, starts and finish at the same point. Therefore the rise and fall have to equal eachother. Hope this helps.
Hi Buildsum mate, just quick one i did a survey from the front of my house to the back of my house (through the garage, changing about 3 times to get all corners) i turn out to have 2mm difference in my b/sight-f/site and my rise and fall. Is this just a coincidence as i did not start and finish at the same point, or is it just telling me my block is flat from front to back? Thanks again great vid mate!
Hi mate, as long as the check on the level book are good then it must be right. Where you measuring at the corner of the house of just out in the yard?
@@Buildsum Just out in the yard! Not the slab which id hope is flat :) I basically wanted to see what fall i had on my stormwater pipe from the kerb and channel in the road, to my upstream pit in my backyard. I suspected it wasnt going to have much fall but this suggests dead set flat....So i was just puzzled. So the check you do should be the same regardless if you dont stop/start at the same point? That is if you do points A - B -C -D and finish it should be the same checks as if you did A - B -C -D - A again? Thanks alot for your time by the way
if i want to level the area round a building, lets say the fenced compound is kinda slopping unevenly, so i want to use a level to correct this slope and cos water to flow from one part to the drainage.... how can i do this.. am thinking if i round a level, round the area, then obtain the highest point say (3.459) and the lowest point say (1.256), if i add this and divide by the number of points or stations (say 15 points run the compound), so if i do this maths, i should have a value say 0.314, then i can slope the are using a constant value of 0.314m. so the new height of the highest point will be (3.459-0.314m) which will yield 3.145m. i can slope the entire area by a constant .314m.. can this calculations be right.. ideas are welcomed.. thanks
Hi Marshal I would work out the differnce between the highest reading and the lowest reading so 3.459 - 1.256 = 2.203 then devide this by 2 so 2.203/2=1.101 The add this to the lowest reading or subtract from the highest So 3.459-1.101=2.358 this would give a reading for the average height across the block. Alternatively you could add up ALL of your readings and then divide by the number to get your average, this would be more acurate
+Buildsum BTW i'm a Quantity Survey, Student............! Seriously your channel is PERFECT for my studies..........! Thank you once again, and looking forward for more videos. cheers mate.........!
Hi Alex, if the number in the Level book is a negitive this means that point where the reading was taken is above the Line of Sight (Collimation) of the instrument. This is done by inverting the staff and taking the reading upside down and recording it as a negitive. If you minus a negitive figure you are effectively adding it on e,g, 1.120 - - 2.355 = 3.475 giving you a rise. Hope this helps
Kkae Ong Hi Khae The intermediate sights are additional readings taken from the same position. They are the same as the foresight and the backsight it just that the foresight and backsights are used to calculate the difference in height between to different positions that the readings are taken from. if you didn't have any intermediate sights that's ok but you have to have foresights and backsights. Hope this helps
thank u so much sir .. I'm a student of civil engineering .. it has helped me a lot .. if u use fb , then can I send you a friend request? name please ?
Hi Eric If your survey started and finished at the same spot then you should get all zero's, depending on how accurate your reading of the staff was. If they don't then the amount should only be very small say 5 to 10mm and it should be the same across all three checks. If the 3 checks are different then there is a problem with your calculations. What is acceptable depends on the number of reading that you have taken, the rise and fall of the survey and what degree of accuracy you require for the end product If you didn't start and finish at the same point then you wont get a zero however all three checks should be the same. Hope this helps
Thank you for responding. I am new to the world of surveying. Levels is one thing I don't understand. I know pretty much how to run levels but I don't know what they prove or why they have to hit back to zero.
+wondering tareen If non of the check work out to be the same then you have probably made a mistake with the calculations or the process or you may have misread or written down a reading incorrectly.
Mario Przepiora Hi Mario Yes I could have used the formula function however I wanted to take the viewer through each step as if they were doing it on paper so they would understand it. Formulas are great once you know what they are actually doing for you.
Just wanted to thank u for ur videos; setting out, two peg test, height of collimation and the others, they were crucial in my Cert IV. Most appreciated.
Nothing better than an example using graphic animation and spreadsheet. This is a field work and is graphic! Thank you!!!
thanks a lot, your videos have explained in less than an hour what my lecturer couldn't have in more than 10 days
Zamo khuboni Thanks Zamo I'm glad it helped
Best one I've watched so far. Thanks
Thank you man you helped me so much with my final Surveying exam
Thabk you for the video taking the time to show us how to read and calculate each point. Very helpful!
Thanks Mate, I'm glad it was helpful.
buildsum,you are awsum..please keep posting more videos like this
This was so helpful!
Thanks for making these videos. :>
Great vid, keep it up
Thanks for this video, it is very useful.
good work
easy in understanding
thank you
Love you Buildsum
Buildsum for Australian of the year!!
LOL thanks mate, glad you like it.
Found this very useful, thanks.
Thanks Mate, I'm glad you like it.
THANK YOU SO MUCH FOR THE VIDEO... i HAVE A TEST TOMORROW. YOU SAVED MY DAY TKS AGAIN
No problem glad I could help
Loving the Videos mate well done, you make it very easy to understand!
Thanks Mate, I'm glad you like them!
Thanks man. I'm actually a computer nerd not a surveyor, I'm just trying to educate myself but if you know how many survey points you're taking you can program Excell to do all the math for you. You seem to be familiar with spreadsheet programs but there is so much more you can do with it... even incorporate your data into a 3d graph. I hope this was as helpful as your video. Thanks again. Very helpful.
Hi Gary, yeah I am a bit of a computer nerd as well and I have done all of these spreadsheets with all of the formulas and graphs however that doesn't help my students learn how to do it in the first place.
@@Buildsum makes perfect sense.
Excellent video sir. thnx a lot.
Thank you so much for this video. really it's most helpful i appreciate.
Thanks Dany, glad you like it
great,thanks for this viedo.
Thank you!
So help full thanks
That was great!thank you sir...
+Sanu sukie No Problem Sanu Glad you like it
Thank you. This was helpful
Thanks Angella, I'm glad it was helpful!
Thanks uploader! :) you helped me top my year in technical drawing ;)
Aisha Azeemah Thats great, congratulations
Buildsum thanks! I subbed! :)
thanks for the help.
Thank you so much. well explained.
Thanks mate, great to hear.
THANK YOU SOOO MUCH!!!
Thanks for your comment, Suhel.
Great video
thank you. but what if the values are not same of BS & FS ???
Hello Buildsum, Gr8 video! One query though.. When you are observing the levels two points from the same reference point and one gives you a lower value, doesnt it indicate a fall? as in the vid above, first two points : 2.050 and 1.970.. observed from the same datum. 1.970 must be lower than 2.050. But How come 1.970's RL is greater than that of 2.050? Isnt the first set of difference values coming under fall and second set under rise?
Monis Raza Hi Monis I'm glad you like the videos as for your question as the ground rises the reading on the staff will get less therefore a reading of 1.000 would be higher on the ground than a reading of 1.200.
Therefore the lower the reading the higher the ground
Hope this helps
Buildsum
Thank you so much this helped with my assignment
Hi Jack, thanks that is great to hear.
thank u
thankyou for the video
Hi Mate, thanks for your comment.
AAAA++++
Great , Very Helpful
Firstly great video, gives a good refresher lesson. My question is what would an allowable error be between the three checks, 10mm?
Thanks bssk1337, There should be no error between the 3 checks if there are then you have done something wrong with your calculations. An error of up to 5 mm would generally be acceptable for the reading however this depends on the number of readings that you take, distance and change in height over the survey run.
Hope this helps
thank you
Don't you perhaps have other videos on how to calculate volume using levelling?
Hi, No nothing like that at the moment sorry
thanks mate
Thanks you
Hey mate not sure if you'll respond but why does the total sum of rises and the total sum of falls equal eachother? any reason for that?
Hi Mate, they only equal each other when you have a closed survey, starts and finish at the same point. Therefore the rise and fall have to equal eachother. Hope this helps.
thanks
nice
thanks lot
thanks...
Thanks
Hi Buildsum mate, just quick one i did a survey from the front of my house to the back of my house (through the garage, changing about 3 times to get all corners) i turn out to have 2mm difference in my b/sight-f/site and my rise and fall. Is this just a coincidence as i did not start and finish at the same point, or is it just telling me my block is flat from front to back? Thanks again great vid mate!
Hi mate, as long as the check on the level book are good then it must be right. Where you measuring at the corner of the house of just out in the yard?
@@Buildsum Just out in the yard! Not the slab which id hope is flat :) I basically wanted to see what fall i had on my stormwater pipe from the kerb and channel in the road, to my upstream pit in my backyard. I suspected it wasnt going to have much fall but this suggests dead set flat....So i was just puzzled. So the check you do should be the same regardless if you dont stop/start at the same point? That is if you do points A - B -C -D and finish it should be the same checks as if you did A - B -C -D - A again? Thanks alot for your time by the way
Ok, yeah looks like your block is pretty level
Yes the checks are the same regardless of if you did an open or closed survey.
@@Buildsum thanks again mate!
Great
Thank you
Thanks louis
if i want to level the area round a building, lets say the fenced compound is kinda slopping unevenly, so i want to use a level to correct this slope and cos water to flow from one part to the drainage.... how can i do this..
am thinking if i round a level, round the area, then obtain the highest point say (3.459) and the lowest point say (1.256), if i add this and divide by the number of points or stations (say 15 points run the compound), so if i do this maths, i should have a value say 0.314, then i can slope the are using a constant value of 0.314m. so the new height of the highest point will be (3.459-0.314m) which will yield 3.145m. i can slope the entire area by a constant .314m.. can this calculations be right.. ideas are welcomed.. thanks
Hi Marshal
I would work out the differnce between the highest reading and the lowest reading so 3.459 - 1.256 = 2.203 then devide this by 2 so 2.203/2=1.101 The add this to the lowest reading or subtract from the highest So 3.459-1.101=2.358 this would give a reading for the average height across the block.
Alternatively you could add up ALL of your readings and then divide by the number to get your average, this would be more acurate
thanks, but if i have obtained the average height, then mathematically how do i go about distributing a fine gradient, round my area... thanks
Good
😎👍👍
Sir plz upload a video on how to make Ramp and Drain using Auto level surveying
Sorry mate, I have nothing like that in the pipeline so it could be a long time off, if ever.
thank you
+Ahamed Mahuzin No worries Ahamed
+Buildsum BTW i'm a Quantity Survey, Student............! Seriously your channel is PERFECT for my studies..........! Thank you once again, and looking forward for more videos. cheers mate.........!
Does anybody know what to do when the IS is a minus number, do you still just take it away or...?
Hi Alex, if the number in the Level book is a negitive this means that point where the reading was taken is above the Line of Sight (Collimation) of the instrument. This is done by inverting the staff and taking the reading upside down and recording it as a negitive. If you minus a negitive figure you are effectively adding it on e,g, 1.120 - - 2.355 = 3.475 giving you a rise.
Hope this helps
MAy i know what is the use of the intersight?
Kkae Ong Hi Khae
The intermediate sights are additional readings taken from the same position. They are the same as the foresight and the backsight it just that the foresight and backsights are used to calculate the difference in height between to different positions that the readings are taken from. if you didn't have any intermediate sights that's ok but you have to have foresights and backsights.
Hope this helps
Wish my ex hadn't taken the house so I could practice this
This guys math is better than his English.
thank u so much sir .. I'm a student of civil engineering .. it has helped me a lot .. if u use fb , then can I send you a friend request? name please ?
HI Dark Horse
Thanks for your kind comments
You can like my 'Buildsum' Face book page
facebook.com/Buildsum-645576322137445/
Buildsum 💓
what if it doesn't zero out
Hi Eric
If your survey started and finished at the same spot then you should get all zero's, depending on how accurate your reading of the staff was. If they don't then the amount should only be very small say 5 to 10mm and it should be the same across all three checks.
If the 3 checks are different then there is a problem with your calculations. What is acceptable depends on the number of reading that you have taken, the rise and fall of the survey and what degree of accuracy you require for the end product
If you didn't start and finish at the same point then you wont get a zero however all three checks should be the same.
Hope this helps
Thank you for responding. I am new to the world of surveying. Levels is one thing I don't understand. I know pretty much how to run levels but I don't know what they prove or why they have to hit back to zero.
what if none of the results are same.. BS FS, RISE FALL, REDUCED LEVEL etc
+wondering tareen If non of the check work out to be the same then you have probably made a mistake with the calculations or the process or you may have misread or written down a reading incorrectly.
got it. thank you
You're using Excel, but adding things manually. You should show how to use formulas and make this a 2 minute video
Mario Przepiora Hi Mario Yes I could have used the formula function however I wanted to take the viewer through each step as if they were doing it on paper so they would understand it. Formulas are great once you know what they are actually doing for you.
Intermediate level must be relative to backsigh level.. please check yout calculations
Hi mate, thanks for your comment however could you clarify how the IS and BS have to related, these measurements have been checked 100s of time btw.
You can get a copy of Excel
Ghatiya hai..
thanks
Great video
+David Yi whose send me complete practicals of survey